Sometimes when a sheep or cow the atres wheat, everything going well and suddenly stops following you, but although give him a blow or you take off and put back the wheat , not if it's a bug duplicado but this is very annoying.
MC-2754
Cows sheep wheat bug
Resolved
Duplicate
0
(Unassigned)
Confirmed
cows, sheeps, wheat
Minecraft 1.4.2, Minecraft 1.4.4
Retrieved
I can confirm that they lose interest after a while.